Revision of Hamites wernickei Wollemann, 1902 (Cephalopoda, Ancyloceratina) from the classic Lüneburg section (Upper Cretaceous, northern Germany) (original) (raw)
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European Journal of Taxonomy
The ammonoids of the suborder Tornoceratina from the Middle to Late Devonian Red Ironstone Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde, Berlin. The species Tornoceras typus (Sandberger & Sandberger, 1851), Tornoceras frechi Wedekind, 1918 and Epitornoceras mithracoides (Frech, 1888) are re-described based on the original material from the Red Ironstone. The new genus Lentitornoceras gen. nov. is proposed for the new species L. materni gen. et sp. nov.; the new genus Paucitornoceras gen. nov. is proposed with the type species Goniatites paucistriatus. Epitornoceras transmediterraneum sp. nov. is described from the Anti-Atlas of Morocco and compared with E. mithracoides.
The pharciceratid ammonoids from the Roteisenstein Formation of Dillenburg (Cephalopoda, Ammonoidea)
European Journal of Taxonomy, 2021
The ammonoids of the suborder Pharciceratina from the Red Ironstone Formation of the area around Dillenburg (eastern Rhenish Mountains) are revised, mainly based on historical collections stored in the Museum für Naturkunde, Berlin. The genus Evopharciceras gen. nov. and the following species are newly described: Maenioceras ornatum sp. nov., Pharciceras beyrichi sp. nov., Pharciceras kruegeri sp. nov., Pharciceras ferrum sp. nov., Evopharciceras formosum gen. et sp. nov., Extropharciceras metallicum sp. nov., Lunupharciceras kochi sp. nov., Stenopharciceras lotzi sp. nov., Pluripharciceras ahlburgi sp. nov. and Sandbergeroceras archiaci sp. nov. Neotypes are proposed for the species Extropharciceras becheri (von Buch, 1832) and Sandbergeroceras costatum (d’Archiac & de Verneuil, 1842). The stratigraphic distribution of the genera is discussed; they are assigned to three assemblages: (1) Maenioceras terebratum Zone (early Givetian; two species), (2) Pseudoprobeloceras pernai Zone (l...
2012
From thinly laminated marlstones of the Hesseltal Formation, representing the Late Cenomanian Oceanic Anoxic Event (OAE) 2, at Lengerich in the Teutoburger Wald (Westfalen, north-west Germany), 17 sediment-compacted baculitid ammonites with carbonised and partially phosphatised soft parts are recorded. Some preserve remains of the buccal mass, including jaws (occasionally articulated) and radulae, as well as of the cephalic cartilage, such as eye capsules. Such have not yet been recorded previously for the order Ammonoidea. In addition, originally unmineralised parts found preserved in these specimens include extensive portions of the digestive tract, the siphonal tube, false colour patterns (megastriae), as well as traces of what would appear to be the oviduct. At the same levels, patches with numerous isolated horny upper and rarer lower jaws as well as radulae occur; these may represent regurgitates or faeces of larger predators. The cephalopod remains described were deposited in an epicontinental setting, possibly at palaeodepths between 200 and 600 m. In this particular Late Cretaceous fossil Lagersta¨tte, upper jaws and anaptychi of ammonites rank among the commonest fossils.
1 Benzstrasse 9, 73469 Riesbürg 2 Staatliches Museum für Naturkunde, Rosenstein 1, 70191 Stuttgart 3 Schillerstrasse 15, 68804 Altlussheim 4 Ahornweg 1, 73111 Nenningen 5 Lehenhof 2, 88693 Deggenhäusertal 6 Landhausstrasse 20, 72411 Bodelshausen 7 8 rue haute, F-67390 Mackenheim 8 Untere Ringstrasse 23, 79859 Schluchsee 9 Bezgenrieterstrasse 33, 73092 Heiningen 10 Hauptstrasse 48, 78589 Dürbheim Manuscript received December 8, 2009; revised manuscript accepted February 24, 2010 Zitteliana 71 -88 4 Pls, 4 Textfigs München, 30.06.2010 Abstract We present insufficiently or previously unknown am-monites of the families Erycitidae Spath, 1928, Otoitidae MaScke, 1907 and Stephanoceratidae NeuMayr, 1875 from the Upper Aalenian and early Lower Bajocian (Middle Ju-rassic) of southern Germany. The newly recorded taxa of the Erycitidae are: Abbasites gardincola (de GreGorio), Abbasites aff. abbas BuckMaN and Spinammatoceras aff. sagax (Vacek); of the Otoitidae: Docidoceras zemistephanoides Géc...
Temporal patterns in disparity and diversity of the Jurassic ammonoids of southern Germany
A morphometric analysis of the characteristic whorl cross-sections of 1,200 Jurassic ammonoid species from southern Germany enabled us to characterise their morphospace. The successive Jurassic ammonoid faunas of southern Germany show characteristic patterns in morphospace occupation. While Early and Middle Jurassic ammonoids occupy limited areas of the morphospace range, the Late Jurassic ammonoids cover the entire spectrum. The ammonoids are characterised by an overall increase of both taxonomic diversity and morphological disparity in the course of the Jurassic. Strong fluctuations occur until the middle Late Jurassic, followed by a diversity decrease in the early Kimmeridgian and a disparity reduction in the early Tithonian. While diversity and disparity show similar progression during most of the Early Jurassic, they diverge subsequently and show only poor correlation until the end of the Jurassic. Particularly in the Middle Jurassic diversity and sea level changes correlate strongly. Neither temporal patterns in diversity nor disparity support the hypothesis of a mass extinction event in the early Toarcian. Significant changes in diversity and disparity in the early Callovian support a putative migration event of Boreal ammonoids into the Tethyan realm. (© 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Neues Jahrbuch fiir Geologie und …, 2005
Aulacostephanus cf. subundorae (PAVLOW) is recorded for the first time from the Upper Jurassic Brenztaltrümmerkalk Member in Eastern Swabia (SW Germany). Together with Gravesia irius (D’ORBIGNY), this ammonite species of Subboreal origin is indicative of the youngest Late Kimmeridgian Autissiodorensis Zone. The co-occurring ammonites from this formation have a Submediterranean origin. Hence, a good correlation is possible between the Subboreal and the Submediterranean zonation around the Kimmeridgian/Tithonian boundary.